<template>
  <div class="app-container">
    讲师列表
    <el-card class="operate-container" shadow="never">
      <el-form :inline="true" class="demo-form-inline">
        <el-form-item label="名称">
          <el-input v-model="searchObj.name" placeholder="讲师名" />
        </el-form-item>

        <el-form-item label="头衔">
          <el-select v-model="searchObj.level" clearable placeholder="头衔">
            <el-option value="1" label="高级讲师" />
            <el-option value="0" label="首席讲师" />
          </el-select>
        </el-form-item>

        <el-form-item label="入驻时间">
          <el-date-picker
            v-model="searchObj.joinDateBegin"
            placeholder="开始时间"
            value-format="yyyy-MM-dd"
          />
        </el-form-item>
        <el-form-item label="-">
          <el-date-picker
            v-model="searchObj.joinDateEnd"
            placeholder="结束时间"
            value-format="yyyy-MM-dd"
          />
        </el-form-item>

        <el-button type="primary" icon="el-icon-search" @click="fetchData()"
          >查询</el-button
        >
        <el-button type="default" @click="resetData()">清空</el-button>
      </el-form>
    </el-card>
    <el-card class="operate-container" shadow="never">
      <i class="el-icon-tickets" style="margin-top: 5px"></i>
      <span style="margin-top: 5px">数据列表</span>
      <el-button class="btn-add" @click="add()" style="margin-left: 10px"
        >添加</el-button
      >
      <el-button class="btn-add" @click="batchRemove()">批量删除</el-button>
    </el-card>
    <el-table
      :data="list"
      border
      stripe
      @selection-change="handleSelectionChange"
    >
      <el-table-column type="selection" />
      <el-table-column label="#" width="50">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>
      <el-table-column prop="name" label="名称" width="80" />
      <el-table-column label="头衔" width="90">
        <template slot-scope="scope">
          <el-tag v-if="scope.row.level === 1" type="success" size="mini"
            >高级讲师</el-tag
          >
          <el-tag v-if="scope.row.level === 2" size="mini">首席讲师</el-tag>
        </template>
      </el-table-column>
      <el-table-column prop="intro" label="简介" />
      <el-table-column prop="sort" label="排序" width="60" />
      <el-table-column prop="joinDate" label="入驻时间" width="160" />
      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <el-button type="text" size="mini" @click="removeById(scope.row.id)"
            >删除</el-button
          >
          <router-link :to="'/vod/teacher/edit/' + scope.row.id">
            <el-button type="text" size="mini">修改</el-button>
          </router-link>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页组件 -->
    <el-pagination
      :current-page="page"
      :total="total"
      :page-size="limit"
      :page-sizes="[5, 10, 20, 30, 40, 50, 100]"
      style="padding: 30px 0; text-align: center"
      layout="total, sizes, prev, pager, next, jumper"
      @size-change="changePageSize"
      @current-change="changeCurrentPage"
    />
  </div>
</template>
<script>
//引入定义接口的js文件
import teacherApi from "@/api/vod/teacher";
export default {
  data() {
    return {
      list: [], //讲师列表,需要提交的代码
      total: 0, //总记录数
      page: 1, //页码
      limit: 10, //每页条数
      searchObj: {}, //搜索条件
      multipleSelection: [], //批量删除选中的记录条数
    };
  },
  created() {
    this.fetchData();
  },
  methods: {
    batchRemove: async function () {
      if (this.multipleSelection.length === 0) {
        this.$message.warning("请选择要删除的记录！");
        return;
      }
      let ids = []
      for (let i = 0; i < this.multipleSelection.length; i++) {
        const element = this.multipleSelection[i];
        ids.push(element.id)
      }
      try{
        let res = await this.$confirm(
        "此操作将永久删除讲师信息, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      );
      }catch{return}
      //进行逻辑删除
      let remove = await teacherApi.batchRemove(ids);
      this.$message({
        type: "success",
        message: "删除成功!",
      });
      this.fetchData();
    },
    handleSelectionChange: async function (select) {
      this.multipleSelection = select;
    },
    add: function () {
      this.$router.push({ path: "/vod/teacher/create" });
    },
    fetchData: async function () {
      let response = await teacherApi.pageList(
        this.page,
        this.limit,
        this.searchObj
      );
      this.list = response.data.records;
      this.total = response.data.total;
      console.log(this.list);
    },
    changePageSize: function (size) {
      this.limit = size;
      this.fetchData();
    },
    changeCurrentPage: function (size) {
      this.page = size;
      this.fetchData();
    },
    resetData: function () {
      this.searchObj = {};
      this.fetchData();
    },
    removeById: async function (id) {
      try{
        let res = await this.$confirm(
        "此操作将永久删除讲师信息, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      );
      }catch{
        return
      }
      //进行逻辑删除
      let remove = await teacherApi.removeById(id);
      this.$message({
        type: "success",
        message: "删除成功!",
      });
      this.fetchData();
    },
  },
};
</script>